Cannot register class in Ebean server (Play Framework 2 - Java)
ebean, java, playframework, playframework-2.2
Solution
SOLVED: It turned out that the methods with problems all referenced fields that were marked as final. Apparently, Play Framework / Ebean does not like final fields in Entity classes. After removing the `final` keyword from these field, the problem went away.
Problem
I am getting the following error when running my Play Framework 2.2.x (Java) project: ``` Configuration error Cannot register class [models.SomeClass] in Ebean server ``` The error messages displayed in the browser points me to the line `ebean.default="models.*"` in my `application.conf`, and the console tells me that I have a `java.lang.VerifyError: Bad type on operand stack` in one of my methods. There is nothing special about the methods for which this happens, and it has happened for a handfull of methods now. I have found out that the error can be avoided by using a static method instead: that is by replacing `someObject.doJob()`by `SomeClass.doJob(someObject)`. I have used this hack, and it works, but I am not very happy about making all my methods static when they should not be. Has anyone encountered the same problem and found a way to fix it (without making the methods static)?